Improvement in harrows



@stent @Mira We allwhom it may concerne FIINTo-N Y.TAvENN-RR, JOHN weALB'RAITH, AND ALFRED SMITH,

or SEDALIA, MISSOURI.

Letters Patent No. 94,044, dated August 24, 1869.

.IMPRovEMENT IN EARL-cows'.

The Schedulereferred to in these Letters Patent and making part f the Same- Be it known that we, FENTON Y. TAVENNER, JOHN VW. GALBRAITH, and ALFRED SMITH, of Sedalia, in the county of Pettis, and State .of Missouri, have invented a new and useful Improvement in Harrows;V and we do hereby declare that the following is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

This. 'nvention relates to improvements iu harrows, intended to facilitate cleaning the teeth when-clogged with straw, grassroots, &c., and to provide' an arrangement whereby the teeth may beso adjusted that they may be prevented from engagingwith thezground when it is desired to move the harrow from one field to another, or along a road.

Figure 1 represents a longitudinal sectional elevation of our improvement, and

Figure 2 is a plan view of the same.

Similar letters of reference indicate corresponding parts.

as commonly'done, we arrange them so as to work 'eely up and down through the frame, andA secure them at their upper ends to metallic bars, A. These Instead of securing the teeth firmly tothe framing, y

F represents auslotted post, rising'upward from the framing, wherein the long'arm of the lever C works. v

sary to withdraw the pin and allow the lever to fall,

when the frame willv fall to the ground, and thereby clear the teeth. .1n this condition the teeth will be prevented from engagingv with the ground when it is desirable vto move 'the barrow along a road or over a field which it is not desired tovvharrow. A.

To clean the teeth of harrows, as commonly'con-v structe'd, it is necessary to raise them HP, One side at a.

time, and scrape ofi' the refuse matter with the hands or feet, which is laborious and dangerous, and requires considerable time, whereas, by our improved plan, it can be readily accomplishedv without stopping the team, and with very little labor.`

Having thus described our invention', y Y We claim, and desire to secure by Letters Patent- The combination, with the teeth, the framing, and the 4metallic bars A, of the levers C, D, and E, substantially as specified.

The above specification of our invention signed by us, this 2d day of January, 1869.A

FENTONYY. TAVENNER. JOHN W. GALBRAITH.

Witnesses: .ALFRED SMITH.

J. V. ToBIAs, l J AMES M. MILLS. 

